/** 
 * jQuery MD5 hash algorithm function 
 * 
 * <code> 
 * Calculate the md5 hash of a String 
 * String $.md5 ( String str ) 
 * </code> 
 * 
 * Calculates the MD5 hash of str using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash. 
 * MD5 (Message-Digest algorithm 5) is a widely-used cryptographic hash function with a 128-bit hash value. MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of data. The generated hash is also non-reversable. Data cannot be retrieved from the message digest, the digest uniquely identifies the data. 
 * MD5 was developed by Professor Ronald L. Rivest in 1994. Its 128 bit (16 byte) message digest makes it a faster implementation than SHA-1. 
 * This script is used to process a variable length message into a fixed-length output of 128 bits using the MD5 algorithm. It is fully compatible with UTF-8 encoding. It is very useful when u want to transfer encrypted passwords over the internet. If you plan using UTF-8 encoding in your project don't forget to set the page encoding to UTF-8 (Content-Type meta tag). 
 * This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin. 
 * 
 * Example 
 * Code 
 * <code> 
 * $.md5("I'm Persian."); 
 * </code> 
 * Result 
 * <code> 
 * "b8c901d0f02223f9761016cfff9d68df" 
 * </code> 
 * 
 * @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com > 
 * @link http://www.semnanweb.com/jquery-plugin/md5.html 
 * @see http://www.webtoolkit.info/ 
 * @license http://www.gnu.org/licenses/gpl.html [GNU General Public License] 
 * @param {jQuery} {md5:function(string)) 
 * @return string 
 */  
(function($) {  
    var rotateLeft = function(lValue, iShiftBits) {  
        return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));  
    }  
    var addUnsigned = function(lX, lY) {  
        var lX4, lY4, lX8, lY8, lResult;  
        lX8 = (lX & 0x80000000);  
        lY8 = (lY & 0x80000000);  
        lX4 = (lX & 0x40000000);  
        lY4 = (lY & 0x40000000);  
        lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);  
        if (lX4 & lY4)  
            return (lResult ^ 0x80000000 ^ lX8 ^ lY8);  
        if (lX4 | lY4) {  
            if (lResult & 0x40000000)  
                return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);  
            else  
                return (lResult ^ 0x40000000 ^ lX8 ^ lY8);  
        } else {  
            return (lResult ^ lX8 ^ lY8);  
        }  
    }  
    var F = function(x, y, z) {  
        return (x & y) | ((~x) & z);  
    }  
    var G = function(x, y, z) {  
        return (x & z) | (y & (~z));  
    }  
    var H = function(x, y, z) {  
        return (x ^ y ^ z);  
    }  
    var I = function(x, y, z) {  
        return (y ^ (x | (~z)));  
    }  
    var FF = function(a, b, c, d, x, s, ac) {  
        a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));  
        return addUnsigned(rotateLeft(a, s), b);  
    };  
    var GG = function(a, b, c, d, x, s, ac) {  
        a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));  
        return addUnsigned(rotateLeft(a, s), b);  
    };  
    var HH = function(a, b, c, d, x, s, ac) {  
        a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));  
        return addUnsigned(rotateLeft(a, s), b);  
    };  
    var II = function(a, b, c, d, x, s, ac) {  
        a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));  
        return addUnsigned(rotateLeft(a, s), b);  
    };  
    var convertToWordArray = function(string) {  
        var lWordCount;  
        var lMessageLength = string.length;  
        var lNumberOfWordsTempOne = lMessageLength + 8;  
        var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;  
        var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;  
        var lWordArray = Array(lNumberOfWords - 1);  
        var lBytePosition = 0;  
        var lByteCount = 0;  
        while (lByteCount < lMessageLength) {  
            lWordCount = (lByteCount - (lByteCount % 4)) / 4;  
            lBytePosition = (lByteCount % 4) * 8;  
            lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));  
            lByteCount++;  
        }  
        lWordCount = (lByteCount - (lByteCount % 4)) / 4;  
        lBytePosition = (lByteCount % 4) * 8;  
        lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);  
        lWordArray[lNumberOfWords - 2] = lMessageLength << 3;  
        lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;  
        return lWordArray;  
    };  
    var wordToHex = function(lValue) {  
        var WordToHexValue = "", WordToHexValueTemp = "", lByte, lCount;  
        for (lCount = 0; lCount <= 3; lCount++) {  
            lByte = (lValue >>> (lCount * 8)) & 255;  
            WordToHexValueTemp = "0" + lByte.toString(16);  
            WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);  
        }  
        return WordToHexValue;  
    };  
    var uTF8Encode = function(string) {  
        string = string.replace('//x0d/x0a/g', "/x0a");  
        var output = "";  
        for ( var n = 0; n < string.length; n++) {  
            var c = string.charCodeAt(n);  
            if (c < 128) {  
                output += String.fromCharCode(c);  
            } else if ((c > 127) && (c < 2048)) {  
                output += String.fromCharCode((c >> 6) | 192);  
                output += String.fromCharCode((c & 63) | 128);  
            } else {  
                output += String.fromCharCode((c >> 12) | 224);  
                output += String.fromCharCode(((c >> 6) & 63) | 128);  
                output += String.fromCharCode((c & 63) | 128);  
            }  
        }  
        return output;  
    };  
    $.extend( {  
        md5 : function(string) {  
            var x = Array();  
            var k, AA, BB, CC, DD, a, b, c, d;  
            var S11 = 7, S12 = 12, S13 = 17, S14 = 22;  
            var S21 = 5, S22 = 9, S23 = 14, S24 = 20;  
            var S31 = 4, S32 = 11, S33 = 16, S34 = 23;  
            var S41 = 6, S42 = 10, S43 = 15, S44 = 21;  
            string = uTF8Encode(string);  
            x = convertToWordArray(string);  
            a = 0x67452301;  
            b = 0xEFCDAB89;  
            c = 0x98BADCFE;  
            d = 0x10325476;  
            for (k = 0; k < x.length; k += 16) {  
                AA = a;  
                BB = b;  
                CC = c;  
                DD = d;  
                a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);  
                d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);  
                c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);  
                b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);  
                a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);  
                d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);  
                c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);  
                b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);  
                a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);  
                d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);  
                c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);  
                b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);  
                a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);  
                d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);  
                c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);  
                b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);  
                a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);  
                d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);  
                c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);  
                b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);  
                a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);  
                d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);  
                c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);  
                b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);  
                a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);  
                d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);  
                c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);  
                b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);  
                a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);  
                d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);  
                c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);  
                b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);  
                a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);  
                d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);  
                c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);  
                b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);  
                a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);  
                d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);  
                c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);  
                b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);  
                a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);  
                d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);  
                c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);  
                b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);  
                a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);  
                d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);  
                c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);  
                b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);  
                a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);  
                d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);  
                c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);  
                b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);  
                a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);  
                d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);  
                c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);  
                b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);  
                a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);  
                d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);  
                c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);  
                b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);  
                a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);  
                d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);  
                c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);  
                b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);  
                a = addUnsigned(a, AA);  
                b = addUnsigned(b, BB);  
                c = addUnsigned(c, CC);  
                d = addUnsigned(d, DD);  
            }  
            var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);  
            return tempValue.toLowerCase();  
        }, 
        // 2014-3-18 by sutroon
        md5lite:function(string){
            // 21B95A0F90138767B0FD324E6BE3457B = md5(789789)
            // 8A4114 = md5lite(789789)
            var str=$.md5(string).toUpperCase();
            str=$.md5(str+'md5lite');
            str= str.substr(0,3)+str.substr(str.length-3);
            return str.toUpperCase();
        }
    });  
})(jQuery);  